Question about Pontiac GTO

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I recently acquird a 67' GTO. The engine is a rebuild 400 360hp. I am having heating problems. I replaced the water pump, but it didn't help--same with an electric fan. I would like to see an expanded view of the the water pump/timing chain area. I may be missing some parts.

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  • jneeriemer Jul 29, 2008

    The area I would like a diagram on is between the water pump and timing chain. In addition to the water pump I have the gasket and 2 metal peices, but I'm told there may be an "O" ring I don't have.

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First off, nice car, I used to have a 66. I can tell you that there is no O ring on these, just the gasket. Depending on how long ago the rebuild was and what they did exactly, I would look towards the water ports in the heads and block. These older engines can develop a rust, calcium, and corossion build that restrict the water movement in the engines cooling ports. The other thing is the timing, but I'm leaning towards the ports. I've had this problem with a few 60's model cars that I've owned, not hot enough to do damage ,but hot enough to get concerned. Any automotive store will have a port cleaner to clear any build ups.

Posted on Jul 29, 2008

  • Ryan Rogers
    Ryan Rogers Aug 02, 2008

    Have you tried cleaning the ports?

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Here is one "almost common" expanded view of the waterpump

I recently acquird a 67' - d7ffa2c.jpg
click on the link below for mroe information

Water Pump Diagnosis & Replacement

good luck, hope you get this one working fine

Posted on Jul 29, 2008

  • marlon john madrid
    marlon john madrid Jul 29, 2008

    i cant get a clear blow-up but here's the best i can get.

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I don't have exploded views, but ensure you have the right water pump mounted. 67 GTO water pump

Posted on Jul 29, 2008

  • Ginko
    Ginko Jul 29, 2008

    I mean I suggest the $75 Cardone A1, that iI think is a replica of the original, not the $14 universal water pump, that have less pressure/volume. If you mount an universal water pump on this engine you risk overheating for sure.

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